Rep. Rep. Tom MacArhur can be counted as one of the Trump-friendliest New Jersey House members.

But the Republican is breaking from the Trump administration on this one:

The U.S. Census Bureau isn't going to collect data on gay and lesbian Americans, and he wants to know why.

MacArthur, R-3rd Dist., led a bipartisan letter to the Census Bureau questioning its decision to exclude sexual orientation and gender identify from its list of survey topics, which include gender, age, race, ethnicity, relationship, and homeownership.

Rep. Donald Norcross, D-1st Dist., also signed the letter, as did 10 other lawmakers, primarily from the Northeast.

MacArthur said the Census Bureau should be collecting information about gay, lesbian, bisexual and transgender Americans.

"As members of Congress work to improve the lives of their constituents, it's critical that we have the most accurate data available about our country's makeup," MacArthur said. "Unfortunately, we still don't have any official data on the size of the American LGBT community.

"I urge the Census Bureau to include this data in their next census so that representatives will have a better understanding of how laws and programs will impact LGBT Americans," he said.

MacArthur sought to reach out to Democrats upon his election to the House, but he lined up with the House Republican leadership and played a key role in trying to pass legislation that would leave 23 million more Americans without health care while cutting taxes for corporations and wealthy Americans

He also is supporting the House GOP tax bill that would shrink the federal deduction for state and local taxes, which is used New Jersey taxpayers more than residents of most other states.

Both bills were considered under rules allowing Republicans to write and pass their legislation without reaching out to Democrats. In both cases, MacArthur sided with Trump and House Republican leaders against most of his fellow New Jersey Republican representatives.

The president hosted a fundraiser for MacArthur at his Bedminster golf club in June, raising around $800,000.

Trump in July moved to ban transgender individuals from serving in the U.S. Armed Forces, but his action was stopped in federal court. The Justice Department also has claimed discrimination on the basis of sexual orientation is not prohibited under the Civil Rights Act of 1964.

MacArthur also broke with Donald Trump when the president announced he would no longer allow 800,000 unauthorized immigrants brought to the U.S. as children.